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All Journal Journal of Aquaculture and Fish Health
Talita Shofa Adestia
Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Raya Darmaga Kampus IPB, Bogor, West Java 16680
Agriculture, Biological Sciences & Forestry

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Optimization of Thalassiosira sp. Growth in Mixotrophic Culture by Adding Sucrose and Indole-3-Acetic Acid (IAA): Optimization of Thalassiosira sp. Growth in Mixotrophic Culture by Adding Sucrose and Indole-3-Acetic Acid (IAA) Talita Shofa Adestia; Anargya Pradipa Tristanandana; Muhammad Ridzky Adhory; Ichsan Achmad Fauzi; Muhammad Agus Suprayudi; Julie Ekasari
Journal of Aquaculture and Fish Health Vol. 15 No. 2 (2026): JAFH Vol. 15 No. 2 June 2026
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v15i2.85600

Abstract

Thalassiosira sp. is a significant marine diatom utilized as live feed in aquaculture; however, its culture productivity frequently remains below optimal levels. The present study evaluated the growth performance and culture quality of Thalassiosira sp. under two parallel cultivation strategies: a mixotrophic system supplemented with sucrose and a system supplemented with Indole-3-Acetic Acid (IAA). Both cultivation schemes were maintained for seven days under identical environmental conditions. Sucrose was administered at concentrations ranging from 0.25 to 1 g/L, while IAA was applied at 2.5 to 10 mg/L. Cell density, specific growth rate, dry biomass, and total Vibrio count were measured. Sucrose supplementation, particularly at 1 g/L, resulted in increased growth and biomass accumulation but was accompanied by elevated Vibrio abundance. IAA supplementation also promoted growth and biomass production, with the most pronounced effect observed at 10 mg/L, although it did not reduce bacterial proliferation. These findings indicate that both sucrose and IAA can enhance Thalassiosira sp. culture productivity under controlled conditions, but effective microbial management remains essential for practical implementation.
Co-Authors Anargya Pradipa Tristanandana Ichsan Achmad Fauzi Julie Ekasari Muhammad Agus Suprayudi Muhammad Ridzky Adhory